Temperature/Humidity/Dew Point Circular Chart Recorder
The Temperature/Humidity/Dew Point Circular Chart Recorder uses a red pen to track temperature and a blue pen to track humidity, permanently recording these measurements on a 6-inch (165mm) diameter paper chart. Power is supplied to the temperature recorder through a 110V AC 50/60 Hz plug-in adapter for Model 14013 and a 220V AC adapter for Model 14014. External power may be supplied from any 12V DC source such as automotive, marine or other battery.